4.7 Article

Synthesis and biological evaluation of chalcone-polyamine conjugates as novel vectorized agents in colorectal and prostate cancer chemotherapy

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ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2021.113586

关键词

Chalcone polyamine conjugates; Polyamine-vectorized anticancer drugs; Anti-proliferative activity; Cell cycle arrest; Apoptosis; Colorectal and prostate cancer

资金

  1. Conseil Regional du Limousin
  2. Federation de Recherche ICOA/CBM [FR2708]

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This study aimed to enhance bioavailability and selectivity of chalcone core towards cancer cells by synthesizing chalcone-polyamine conjugates, which showed significant anti-proliferative effects on colorectal and prostate cancer cell lines. The most active conjugate was found to inhibit cell proliferation by blocking the cell cycle at the G1 and G2 phase, and inducing apoptosis through several pro-apoptotic markers. The chalcone-N1-spermidine conjugate could be considered as a promising agent for colon and prostatic cancer adjuvant therapy.
The aim of this study was to synthesize chalcone-polyamine conjugates in order to enhance bioavailability and selectivity of chalcone core towards cancer cells, using polyamine-based vectors. Indeed, it is well-known that polyamine transport system is upregulated in tumor cells. 3',4,4',5'-tetramethoxychalcone was selected as parent chalcone since it was found to be an efficient anti-proliferative agent on various cancer cells. A series of five chalcone-polyamine conjugates was obtained using the 4-bromopropyloxy-3',4',5'-trimethoxychalcone as a key intermediate. Chalcone core and polyamine tails were fused through an amine bond. These conjugates were found to possess a marked in vitro antiproliferative effect against colorectal (HT-29 and HCT-116) and prostate cancer (PC-3 and DU-145) cell lines. The most active conjugate (compound 8b) was then chosen for further biological evaluations to elucidate mechanisms responsible for its antiproliferative activity. Investigations on cell cycle distribution revealed that this conjugate can prevent the proliferation of human colorectal and prostate cancer cells by blocking the cell cycle at the G1 and G2 phase, respectively. Flow cytometry analysis revealed a sub-G1 peak, characteristic of apoptotic cell population and our inquiries highlighted apoptosis induction at early and later stages through several pro-apoptotic markers. Therefore, this chalcone-N1-spermidine conjugate could be considered as a promising agent for colon and prostatic cancer adjuvant therapy. (C) 2021 Elsevier Masson SAS. All rights reserved.

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